Thing is we don't find out usually until after we invest what the real problems are...so we optimize for people we want to spend a lot of time with and work on these problems/issues whatever they may be.
Most founders feel imposter syndrome after they're accepted. The great thing about being part of a batch is you realize you're not alone and then learn that shit show is actually a default state. When you learn that, you relax and focus on the resourcefulness you need to solve your problems systematically.